Well I'd love to give nits and crits but these are all above my pay grade. The only thing I stack are pancakes and your 4 stack is delicious even without a name. The Gulf Fritillary is outrageous...as is the damsel which is not in too much distress.
It is us who should deliver thanks for all the amazing images you share....so "Thanks"
Eric

Fine work Birdie on flash fill on the Gulf B-fly! I saw that shot, saw the kind of light you had and thought how did she get that detail on the shadow side Darn if that shot isn't spot on, congrats on techs and a fine shot it is!

Opener floral has lots of nice layering and is a nice angle with a uniquely colored BG
Last Damsel is a super shot, seems the 'energy' of this shot is a bit muted if that makes sense, need a bit more range on highlights to darks maybe? Sending you an email...........sorry

The hummers are excellent with great sharpness and detail Birdie, as is the damsel. Great comp and look for the flower, but the stray webs draw my eyes, and what is that small black area in the top left corner?
You b'fly is waaay over the top great - masterful use of flash on that one ~ Ron

Gorgeous work Birdie, this is a marvelous set. 2 could stand alone and make for a stupendous set

Nits and notes
1 is super well thought out. You stopped the stacking to the rear at just the right the spot. Having the petals in the back out of focus allows the eye to believe it the shot. Masterful.
2 I'm not too shy to nit a stunning shot a little room to the left of the leaf would relax the shot in my eye
3 okay, here's how good I think you are. The stem in the bg that bisects the wing is a no no. I'm looking at this as if it was my own and that would drive me crazy. I know, I have a ton of them in my "should I really delete these" folder
4 is a really nice peekaboo with the wing position and perfect amount of motion blur, love the bird that is sharp from stem to stern

Those are my thoughts for what they are worth, you asked for a push so....

A lovely set, Birdie; this is one where I enjoyed reading the comments almost as much as I enjoyed seeing the images.

The floral is my favorite! I had the same response as TIm...this is one where the stacking works perfectly; front petals and center sharp with fantastic detail, but back petals out of plane enhance the impact.